Kidde Smoke Detector Mounting Adapter
thingiverse
This adapter enables the use of older Kidde Smoke Detector mounts for the new compact ones. Kidde's decision to alter the mount is unclear, but the updated one renders the smoke detector unusable when swapping with a model mounted in a round electrical box. With this adapter, I successfully installed the new smoke detector in the electrical box using the old mounting plate. I'm sharing this solution in case others encounter a similar challenge. Hopefully, Kidde will revise their mounts to allow for installation in round electrical boxes. The SketchUp files are included for anyone who wants to customize it.
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